Stübbe NM Series, NMB Series, NMXH Series Original Operating Manual
Volute
Centrifugal Pump
Original Operating Manual Series
NM
NMB
NMXH
Version BA-2015.09.18
Print-No. 300 404
TR MA DE Rev002
ASV Stübbe GmbH & Co. KG
Hollwieser Strasse 5
32602 Vlotho
Germany
Phone: +49 (0)5733-799-0
Fax: +49 (0)5733-799-5000
Email: contact@asv-stuebbe.de
Internet: www.asv-stuebbe.de
We reserve the right to make technical changes.
Read carefully before use.
Save for fu
ture use.
Table of contents
Table of contents
1 About this document ............................... 5
1.1 Target groups .......... ....................... 5
1.2 Other applicable documents ................ 5
1.3 Warnings and symbols ....................... 6
2 General safety instructions ....................... 7
2.1 Intended use ................................ .. 7
2.2 General safety instructions ..... ............. 7
2.2.1 Product safety ................................ 7
2.2.2 Operator's obligations . ....................... 8
2.2.3 Obligations of personnel ..................... 8
2.3 Specific hazards .............................. 8
2.3.1 Hazardous pumped liquids .................. 8
2.3.2 Potentially explosive atmospheres .. .. .. .. .. 8
3 Layout and function ...... .......................... 9
3.1 Labels .......................... ............... 9
3.1.1 Type plate ........................... .......... 9
3.1.2 ATEX nameplate ...................... ....... 9
3.2 Description .......................... .......... 9
3.3 Layout ......... ................................ 10
3.4 Shaft seals .......... .......................... 10
3.4.1 Mechanical seals ........ ..................... 10
3.4.2 Auxiliary systems .. . .. .. .. .. .. .. .. .. .. .. .. .. .. 11
4 Transport, Storage and Disposal ................. 12
4.1 Transport .................................. .... 12
4.1.1 Unpacking and inspection upon
delivery ........ ................................ 12
4.1.2 Lifting ........................... ............... 12
4.2 Storage ....... ................................ 13
4.3 Disposal ....... ................................ 13
5 Installation and connection ....................... 14
5.1 Preparing the setup .......................... 14
5.1.1 Check operating conditions .... ............. 14
5.1.2 Preparing the installation site ............... 14
5.1.3 Prepare foundation and surface ............ 14
5.2 Installing with foundation ................ .... 15
5.2.1 Place pump unit on the foundation .. . .. .. .. 15
5.2.2 Attaching pump unit .......................... 15
5.3 Installing motor ..................... .......... 16
5.4 Planning the pipes .............. ............. 16
5.4.1 Specifying supports and flange
connections ... ................................ 16
5.4.2 Specifying nominal widths ................... 16
5.4.3 Specifying pipe lengths ...................... 17
5.4.4 Provide self-priming container .............. 17
5.4.5 Optimizing changes of cross se c tion and
direction ..................................... .. 17
5.4.6 Discharging leaks .......................... .. 17
5.4.7 Providing safety and control devices
(recommended) .................... .......... 17
5.5 Connecting the pipes ................. ....... 18
5.5.1 Keeping the piping clean ................ .... 18
5.5.2 Installing auxiliary pipes .............. ....... 18
5.5.3 Installing suction pipe ........................ 18
5.5.4 Installing the pressure pipe ........ .......... 18
5.5.5 Inspection for stress-free pipe
connections ... ................................ 18
5.6 Electrical connection ......................... 18
5.6.1 Connecting the motor ........................ 18
5.6.2 Checking the direction of rotation . .. .. .. .. .. 18
5.7 Performing the hydrostatic test .............. 18
5.8 Aligning the coupling precisely . ............. 19
5.9 Aligning motor ................................ 19
6Operation............................................ 20
6.1 Preparing for commissioning ................ 20
6.1.1 Checking downtimes ......................... 20
6.1.2 Filling and bleeding ..... ..................... 20
6.1.3 Preparing auxiliary systems (if
present) ....................................... 20
6.1.4 Check direction of rotation ...... ............. 20
6.2 Commissioning ........................... .... 21
6.2.1 Switching on ............. ..................... 21
6.2.2 Switching off .................................. 21
6.3 Shutting down the pump ... .................. 22
6.4 Restoring the pump to service .............. 23
6.5 Operating the stand-by pump ............... 23
7 Maintenance ............... .......................... 24
7.1 Inspections ................................... 24
7.2 Maintenance .. ................................ 24
7.2.1 Maintenance in accordance with maintenance
schedule ................. ..................... 25
7.2.2 Check sealing medium ...................... 25
7.2.3 Cleaning the pump ................. .......... 25
7.3 Dismounting .................................. 26
7.3.1 Preparations for dismounting ................ 26
7.3.2 Disassembly NM NMB ....................... 27
7.3.3 Disassemble NMXH ......................... 27
7.4 Replacement parts and return .............. 27
7.5 Installing .................... .................. 28
7.6 Assembly instruction for shaft protection
sleeve .... ..................................... 28
8 Troubleshooting ..................... ............... 29
9 Appendix ........................... .................. 32
9.1 Replacement parts ........................... 32
9.1.1 Series NM ..................... ............... 32
9.1.2 Series NMB ................................... 34
9.1.3 Series NMXH ............ ..................... 36
9.2 Technical specifications ...................... 38
9.2.1 Ambient conditions ........................... 38
9.2.2 Parameters for auxiliary systems . . .. .. . .. .. 38
9.2.3 Sound pressure level .................... .... 38
2 NM NMB NMXH BA-2015.09.18 300 404
9.2.4 Flange tightening torques ................... 38
9.2.5 Tightening torques of casing screws . . ... . .. 38
9.2.6 Gap size ................ ...................... 38
9.2.7 Lubricant ........................... ........... 39
9.3 Declaration of conformity in accordance with
EC machinery directive ...................... 40
Table of contents
300 404 BA-2015.09.18 NM NMB NMXH 3
Table of contents
List of figures
Fig. 1 Type plate (example) ...... .................. 9
Fig. 2 ATEX nameplate (example) ................. 9
Fig. 3 Layout ......... ................................ 10
Fig. 4 Attach lifting gear to the pump unit . .. .. .. .. 12
Fig. 5 Attach lifting gear to pump ......... .......... 12
Fig. 6 Installation with foundation .................. 15
Fig. 7 Straight pipe lengths in front and after the
pumps (recommended) ...................... 17
Fig. 8 Checking the coupli ng alignment . .. .. .. .. .. 19
Fig. 9 Checking for lateral and vertical
misalignment ....................... .......... 19
Fig. 10 Checking angular offset . ..................... 19
Fig. 11 Sectional drawing ............................ 33
Fig. 12 Sectional drawing NMB ...................... 35
Fig. 13 Sectional drawing NMXH .................... 37
Fig. 14 Lubricating points with grease nipples . . . ... 39
List of tables
Tab. 1 Other applicable documents, purpose and
where found ........................ .......... 5
Tab. 2 Warnings and symbols ....................... 6
Tab. 3 Quenching - variants and features .......... 11
Tab. 4 Blocking - variants and features ............ 11
Tab. 5 Measures to be taken if the pump is shut
down .......... ................................ 22
Tab. 6 Measures depending on the behavior of the
pumped liquid .............. .................. 22
Tab. 7 Maintenance plan ............................ 25
Tab. 8 Fault/number assignment ................... 29
Tab. 9 Troubleshooting list ................... ....... 31
Tab. 10 Designation of components according to part
numbers ...... ................................ 32
Tab. 11 Designation of components according to part
numbers ...... ................................ 34
Tab. 12 NMXH: Part numbers and component
designations ........................ .......... 36
Tab. 13 Ambient conditions ......... .................. 38
Tab. 14 Blocking liquid pressure and outlet
temperature ......................... .......... 38
Tab. 15 Flange tightening torques ...... ............. 38
Tab. 16 Tightening torques of casing screws .. .. .. .. 38
Tab. 17 Lubricant ............ .......................... 39
Tab. 18 Grease/oil lubricant quantity ................. 39
4 NM NMB NMXH BA-2015.09.18 300 404
1 About this document
About this document
This manual
• Is part of the equipment
• Applies to the aforementioned pump series
• Describes safe and appropriate operation during all operating phases
1.1 Target groups
Operating company
• Responsibilities:
– Always keep this manual accessible where the device
is used on the system.
– Ensure that employees read and observe this docu-
ment, particularly the safety instructions and warnings,
and the documents which also apply.
– Observe any additional country-specific rules and reg-
ulations that relate to the system.
Qualified personnel, fitter
• Mechanics qualification:
– Qualified empl oyees with additional trainin g for fitting
the respective pipework.
• Electrical qualification:
– Qualified electrician
• Transport qualification:
– Qualified transport specialist
• Responsibility:
– Read, observe and follow this manual and the other
applicable documents, especially all safety instructions
and warnings.
1.2 Other applicable documents
Document/purpose/
ATEX additional manual (300 364)
• Additional instructions for use in
explosive atmospheres
• http://www.asv-stuebbe.de/
pdf_manuals/300364.pdf
Resistance lists
• Resistance of materials used to
chemicals
• http://www.asv-stuebbe.de/
pdf_resistance/300050.pdf
CE declaration of conformity
• Conformity with standards
Data sheet (technical specifications,
operating conditions, dimensions)
NM
NMB
NMXH
Selfpriming
container
• Pump NM (340 021)
• http://www.asv-stuebbe.de/
pdf_datasheets/340021.pdf
• Pump NMB (340 022)
• http://www.asv-stuebbe.de/
pdf_datasheets/340022.pdf
• Pump NMXH (300 416)
• http://www.asv-stuebbe.de/
pdf_datasheets/300416.pdf
• Self priming container NM,
NMB, NMXH (300 422)
• http://www.asv-stuebbe.de/
pdf_datasheets/300422.pdf
Where
found
(→ 9.3 Declaration of
conformity
in accordance with
EC machinery directive,
Page 40).
Supplier documentation
• Technical documentation for supplier
components (e.g mechanical seal)
Tab. 1 Other applicable documents, purpose
and where found
300 404 BA-2015.09.18 NM NMB NMXH 5
Documentation included
About this document
1.3 Warnings and symbols
Symbol
1. , 2. , … Multiple-step instructions
→
Tab. 2 Warnings and symbols
Meaning
• Immediate acute risk
• Death, serious bodily harm
• Potentially acute risk
• Death, serious bodily harm
• Potentially hazardous situation
• Minor injury
• Potentially hazardous situation
• Material damage
Safety warning sign
Take note of all information
highlighted by the safety warning
sign and follow the instructions to
avoid injury or death.
Instruction
Precondition
Cross-reference
Information, advice
6 NM NMB NMXH BA-2015.09.18 300 404
2 General safety instructions
General safety instructions
The manufacturer does not accept any liability for any damage caused by disregarding any secti ons of the entire documentation.
2.1 Intended use
• Only use the pump with suitable media (→ resistance lists).
• Do not use pump with solid particles or abra s ive fluids.
If pumps are to be used for solid particles, then agree use
in advance with the manufacturer.
• Do not use pump with combustib le or explosive fluids.
• Adhere to the operatin g limits and size-dependent minimum flow rates.
• Avoid dry running:
Initial damage, such as destruction of bearings, seals and
plastic parts, will occur within a few seconds.
– Make sure the pump is only operated with, and never
without, pumped liquid.
• Avoid cavitation:
– Open suction-side fitting fully and do not use to regulate
flow.
– Do not open the pressure-side fitting beyond the
agreed operating point.
• Avoid overheating:
– Do not operate the pump while the p ressure-side fitting
is closed.
–Noteminimumflow (→ Data sheet).
• Avoid damage to the motor:
– Do not open the pressure-side fitting beyond the
agreed operating point.
– Note the maximum permissible number of times th e
motor can be switched on per hour (→ manufacturer's
specifications).
• Consult the manufacturer about any other use of the pump.
• If pumps are delivered without motors, then final assembly
as a pump assembly must take place in accordance with
the provisions of machinery directive 2006/42/EC.
Prevention of o bvious misuse (examples)
• Observe pump limits of use regarding temperature, pressure, flow and speed (→ Data sheet).
• The power consumption of the pump increases as the the
specific gravity of the pumped fluid increases. Adhere to
the permissible specific gravity in order to eliminate the
possibility that the pump, coupling and motor are overloaded (→ Data sheet).
A lower specific gravity is permissible. Adapt the auxiliary
systems accordingly.
• When conveying fluids containing solids, observe the limit
values for proportions of solid particles and particle size
(→ Data sheet, technical description).
• When using auxiliary plant systems:
– Ensure compatibility of the operating medium with the
product medium.
– Ensure constant supply of the relevant operating
medium.
• Pumps used with water as the pumped liquid must not be
used for food stuffs or drinking water. Use with food or
drinking water must be specified in the data sheet.
• Typeofinstallationshouldonlybeselectedinaccordance
with these operating instructions. For example, the following are not allowed:
– Hanging base plate pumps in the pipe
– Overhead installation
– Installation in the immediate vicinity of extreme heat or
cold sources
– Installation too close to the wall
2.2 General safety instructions
Observe of the following regulations before carrying out
any work.
2.2.1 Product safety
The pump has been built according to state-of-the-art technology and the recognized technical safety regulations. Nevertheless, operation of the pump can still put the life and health
of the user or third parties at risk or damage the pump or other
property.
• Only op erate the pump if it is in perfect technical condition
and only use it as intended, staying aware of safety an d
risks, and in adherence to the instructions in this manual.
• Keep this manual and all other applicable documents complete, legible and accessible to personnel at all times.
• Refrain from any procedures and actions that would pose
a risk to personne l or third parties.
• In the event of any safety-relevant faults, shut down the
pump immediately and have the fault corrected by appropriate personnel.
• In addition to the entire documentation for the product,
comply with statutory or other safety and accident-prevention regulations and the applicable standards and guid elines in the country where the pump is operated.
300 404 BA-2015.09.18 NM NMB NMXH 7
General safety instructions
2.2.2 Operator's obligations Safety-conscious operation
• Only ope rate the pump if it is in perfect technical condition
and only use it as intended, staying aware of safety and
risks, and in adherence to the instructions in this manual.
• Ensure that the following safety aspects are observed and
monitored:
– Adherence to intended use
– Statutory or other safety and accident-prevention reg-
ulations
– Safety regulations governing the handling of haz-
ardous substances
– Applicable stand ards and gu idelines in the country
where the pump is operated
– Applicable guidelines of the operator
• Make personal protective equipment available.
Qualified personnel
• Make sure all personnel tasked wi th work on the pump
have read and understood this manual and all other applicable documents, especially the safety, main te nance and
repair information, before they start any work.
• Organize responsibilities, areas of competence and the
supervision of personnel.
• Ensure that all work is carried out by specialist technicians
only:
– Fitting, repair and maintenance work
– Transportation
– Work o n the electrical system
• Make sure that trainee personnel only work on the pump
under supervision of specialist technicians.
Safety equipment
• Provide the following safety equipment a nd verify its functionality:
– For hot, cold and moving parts: pump safety guarding
provided by the customer
– For pumps without capability to run dry: Dry run pro-
tection
– For potential electrostatic charging: provide suitable
grounding
Warranty
• Obtain the manufacturer's approval prior to carrying out
any modifications, repairs or alterations during the warranty
period.
• Only use genuine parts or parts that have been approved
by the manufacturer.
2.2.3 Obligations of personnel
• All directions given on the pump must be followed (and kept
legible), e.g. the arrow indicating the sense of rotation and
the markings for fluid connections.
• Pump, coupling guard and components:
– Do not step on them or use as a climbing aid
– Do not use them to support boards, ramps or beams
– Donotusethemasafixing point for winches or sup-
ports
– Do not use them for storing paper or similar materials
– Do not use hot pump or motor components as a heating
point
– Do not de-ice using gas burners or similar tools
• Do not remove the safety guarding for hot, cold or moving
parts during operation.
• Use personal protective equipment if necessary.
• Only carry out work on the pump while it is not running.
• Before all installation and maintenance work, disconnect the motor from the mains and secure against being
switched back on again.
• Never reach into the suction or discharge flange.
• Following all work on the pump, refit safety devices in
accordance with the instructions and bring into service.
2.3 Specific hazards
2.3.1 Hazardous pumped liquids
• When handling hazardous fluids, observe the safety regulations for the handling of hazardous substances.
• Use personal protective equipment when carrying out any
work on the pump.
• Collect leaking pumped liquid and residues in a safe manner and dispose of in accordance with environmental regulations.
2.3.2 Potentially explosive atmospheres
Observe ATEX additional manual
• Additional instructions for use in explosive atmospheres
• www.asv-stuebbe.de/pdf_manuals/300364.pdf
8 NM NMB NMXH BA-2015.09.18 300 404
3 Layout and function
Layout and function
3.1 Labels
3.1.1 Type plate
ASV Stübbe GmbH & Co. KG
Tel.: +49 (0) 57 33 / 79 9-0
Typ
Fabr. Nr.
8
Werkst.
L ø
7
Q
GLRD
Fig. 1 Type plate (example)
1Pumptype
2 Serial number
3 Housing / sealing material
4–
5 Differential head
6 Shaft seal information
7Flow
8 Impeller diameter [mm]
m
3
/h
H
m
3.2 Description
• NM: Standard pump
– Horizontal, single-stage, non self-priming pump with
single flow volute casing and free shaft end.
– Optionally available complete with coupling and drive
motor, mounted on a base plate.
1
2
3
4
5
6
• NMB: Close coupled pump
– Horizontal, single-stage, non self-priming pump with
single flow volute casing.
–Drivemotorisflang ed on to the pump housing with
wafer type flange (without coupling)
– Torque is transmitted from the drive to the pump by an
extended motor shaft.
• NMXH: Standard pump of modular concept
– Horizontal, single-stage, non self-priming pump with
single flow volute casing and free shaft end.
– Slide-in unit can be dismounted without removing
volute casing and piping.
– Optionally available complete with coupling and drive
motor, mounted on a base plate.
3.1.2 ATEX nameplate
ASV Stübbe GmbH & Co. KG
Tel.: +49 (0) 57 33 / 79 9-0
Typ
Fabr. Nr.
Werkst.
L ø
Q
m
3
/h
H
GLRD
Fig. 2 ATEX nameplate (example)
1 Explosion protection label
1
m
300 404 BA-2015.09.18 NM NMB NMXH 9
Layout and function
3.3 Layout
1
7
2
3
4
5
6
Fig. 3 Layout
1 Discharge flange
2 Mechanical seal
3 Bearing casing
4Shaft
5 Support foot
6Pumpcasing
3.4 Shaft seals
Only one of the following shaft seals can be used.
3.4.1 Mechanical seals
Mechanical seals have a function-related l eak.
• Single acting mechanical seal
• Single acting, non-balanced mechanical seal
• Double acting mechanical seal
• Double acting, non-balanced mechanical seal
7 Suction branch
10 NM NMB NMXH BA-2015.09.18 300 404
3.4.2 Auxiliary systems Sealing systems
Only one of the following sealing systems can be used.
Quenching
When quenchin g, the pressure of the pumped mediu m is
greater than the pressure of the sealing mediu m. The seal
surfaces are lubricated by the pumped medium.
Examples of use:
• Pumped media which reacts chemically with the air
• Prevention of offensive odors
• Cooling of seals
• Protection from icing
Layout and function
Variant
Features of sealing
medium
With open flow • Supplied and drained
continuously
• Unpressurized
In the closed system
• Circulating in a closed
circuit
• Unpressurized
Tab. 3 Quenching - variants and features
Blocking
When blocking, the pressure of the sealing medium is greater
than the pressure of the pumped medium. The seal surfaces
arelubricatedbythesealingmedium.
Examples of use:
• Pumped media which crystallizes or contains solids and
therefore damages the seal in the long-term
• Toxic conveyed media
• Environmentally hazardous conveyed media
Variant
Features of sealing
medium
With open flow • Supplied and drained
continuously
• Impingedwithpressure
In the closed system
• Circulating in a closed
circuit
• Impingedwithpressure
Tab. 4 Blocking - variants and features
300 404 BA-2015.09.18 NM NMB NMXH 11
Transport, Storage and Disposal
4 Transport, Storage and Disposal
4.1 Transport
Weight specifications (→ documents for the particular
order).
4.1.1 Unpacking and inspection upon delivery
1. Unpack the pump/pump assembly upon delivery and
inspect it for transport damage.
2. Check com pleteness and accuracy of delivery.
3. Report any transport damage to the manufacturer immediately.
4. Dispose of packaging material according to local regulations.
4.1.2 Lifting
DANGER
Death or limbs crushed as a result transported items
falling over.
Use lifting gear appropriate for the total weight to be transported.
Attach lifting gear in accordance with the following diagrams.
Never attach the lifting gear to the lifting eye of the motor
(other than for securing against knocking over for pump
assemblies with a high center of gravity).
Do not stand under suspended loads.
Fig. 4 Attach lifting gear to the pump unit
Fig. 5 Attach lifting gear to pump
1. Attach lifting gear in accordance with the following diagrams.
2. Lift pump/pump assembly ap propriately.
12 NM NMB NMXH BA-2015.09.18 300 404
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